DE3584607D1 - MAGNETIC HEAD. - Google Patents

MAGNETIC HEAD.

Info

Publication number
DE3584607D1
DE3584607D1 DE8585111724T DE3584607T DE3584607D1 DE 3584607 D1 DE3584607 D1 DE 3584607D1 DE 8585111724 T DE8585111724 T DE 8585111724T DE 3584607 T DE3584607 T DE 3584607T DE 3584607 D1 DE3584607 D1 DE 3584607D1
Authority
DE
Germany
Prior art keywords
magnetic head
magnetic
head
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
DE8585111724T
Other languages
German (de)
Inventor
Osamu Inagoya
Hideo Fujiwara
Takeshi Tottori
Minoru Yamano
Noriyuki Kumasaka
Shigekazu Otomo
Mitsuhiro Kudo
Juiti Morikawa
Kiyoshi Ishihara
Akira Usui
Masashi Hayashi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Maxell Holdings Ltd
Original Assignee
Hitachi Ltd
Hitachi Maxell Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP59194874A external-priority patent/JPH0770022B2/en
Priority claimed from JP19487584A external-priority patent/JPS6174118A/en
Priority claimed from JP19487684A external-priority patent/JPS6174113A/en
Application filed by Hitachi Ltd, Hitachi Maxell Ltd filed Critical Hitachi Ltd
Application granted granted Critical
Publication of DE3584607D1 publication Critical patent/DE3584607D1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/127—Structure or manufacture of heads, e.g. inductive
    • G11B5/31—Structure or manufacture of heads, e.g. inductive using thin films
    • G11B5/3103—Structure or manufacture of integrated heads or heads mechanically assembled and electrically connected to a support or housing
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/127—Structure or manufacture of heads, e.g. inductive
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/127—Structure or manufacture of heads, e.g. inductive
    • G11B5/187—Structure or manufacture of the surface of the head in physical contact with, or immediately adjacent to the recording medium; Pole pieces; Gap features
    • G11B5/1875—"Composite" pole pieces, i.e. poles composed in some parts of magnetic particles and in some other parts of magnetic metal layers
    • G11B5/1877—"Composite" pole pieces, i.e. poles composed in some parts of magnetic particles and in some other parts of magnetic metal layers including at least one magnetic thin film
    • G11B5/1878—"Composite" pole pieces, i.e. poles composed in some parts of magnetic particles and in some other parts of magnetic metal layers including at least one magnetic thin film disposed immediately adjacent to the transducing gap, e.g. "Metal-In-Gap" structure
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/127—Structure or manufacture of heads, e.g. inductive
    • G11B5/187—Structure or manufacture of the surface of the head in physical contact with, or immediately adjacent to the recording medium; Pole pieces; Gap features
    • G11B5/21—Structure or manufacture of the surface of the head in physical contact with, or immediately adjacent to the recording medium; Pole pieces; Gap features the pole pieces being of ferrous sheet metal or other magnetic layers
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/127—Structure or manufacture of heads, e.g. inductive
    • G11B5/265—Structure or manufacture of a head with more than one gap for erasing, recording or reproducing on the same track
DE8585111724T 1984-09-19 1985-09-17 MAGNETIC HEAD. Expired - Lifetime DE3584607D1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP59194874A JPH0770022B2 (en) 1984-09-19 1984-09-19 Magnetic head
JP19487584A JPS6174118A (en) 1984-09-19 1984-09-19 Magnetic head
JP19487684A JPS6174113A (en) 1984-09-19 1984-09-19 Magnetic head

Publications (1)

Publication Number Publication Date
DE3584607D1 true DE3584607D1 (en) 1991-12-12

Family

ID=27327015

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8585111724T Expired - Lifetime DE3584607D1 (en) 1984-09-19 1985-09-17 MAGNETIC HEAD.

Country Status (3)

Country Link
US (1) US4701819A (en)
EP (1) EP0179269B1 (en)
DE (1) DE3584607D1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62140213A (en) * 1985-12-13 1987-06-23 Hitachi Ltd Magnetic head
EP0246706B1 (en) * 1986-05-21 1991-05-08 Koninklijke Philips Electronics N.V. Magnetic transducing head having clad core faces
US5245488A (en) * 1986-08-13 1993-09-14 Seiko Epson Corporation Low-noise composite magnetic head for recording and producing
JPH01128213A (en) * 1987-11-13 1989-05-19 Hitachi Ltd Metallic thin film magnetic head
US5222006A (en) * 1989-06-16 1993-06-22 Canon Denshi Kabushiki Kaisha Magnetic head and core chip having a magnetic thin film
DE4030326C2 (en) * 1989-09-27 1995-01-12 Mitsubishi Electric Corp Magnetic recording and reproducing apparatus having a plurality of composite magnetic heads and method of manufacturing a composite magnetic head usable with this apparatus
JPH03259407A (en) * 1990-02-07 1991-11-19 Mitsubishi Electric Corp Composite type magnetic head

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5370808A (en) * 1976-12-07 1978-06-23 Victor Co Of Japan Ltd Magnetic head
JPS56124111A (en) * 1980-03-06 1981-09-29 Matsushita Electric Ind Co Ltd Production of magnetic head
JPS56124112A (en) * 1980-03-06 1981-09-29 Matsushita Electric Ind Co Ltd Magnetic head
JPS56169214A (en) * 1980-06-02 1981-12-25 Nippon Hoso Kyokai <Nhk> Magnetic head
JPS58155513A (en) * 1982-03-10 1983-09-16 Hitachi Ltd Composite magnetic head and its manufacture
JPS59142716A (en) * 1983-02-04 1984-08-16 Hitachi Ltd Magnetic head and its manufacture
JPS59207415A (en) * 1983-05-11 1984-11-24 Hitachi Ltd Compound magnetic head and its preparation
JPH0622049B2 (en) * 1983-09-07 1994-03-23 株式会社日立製作所 Combined type magnetic head

Also Published As

Publication number Publication date
EP0179269A3 (en) 1988-07-06
EP0179269B1 (en) 1991-11-06
EP0179269A2 (en) 1986-04-30
US4701819A (en) 1987-10-20

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee